World In Conflict is a real time strategy game made by Swedish wunder-firm Massive (creators of Ground Control 1 and 2), and released in 2007 to high critical acclaim. It's an all out, balls-to-the-wall action-fest, where tanks, helicopters and infantry shot each other to tiny pieces while shells and bombs rain down all over the maps. In short, it's awesome.
The game breaks from standard RTS-formula in some aspects. There's no base building for instance, instead you buy and deploy units on the fly, up to a maximum points-value which is redeemed as the units die.
There's also some attempt at serious story-telling, and I'll leave it up to you to judge how well it succeeds at this.